Datasheet
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232
Transmitters/Receivers
The
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241,
ICL3243
(ISL32xx) devices are 3.0V to 5.5V powered
RS-232 transmitters/receivers that meet ElA/TIA-232
and V.28/V.24 specifications, even at V
CC
= 3.0V.
Targeted applications are PDAs, notebook, and laptop
computers where the low operational power
consumption and even lower standby power
consumption are critical. Efficient on-chip charge
pumps, coupled with manual and automatic
power-down functions (except for the ICL3232),
reduce the standby supply current to a 1µA trickle.
Small footprint packaging, and the use of small, low
value capacitors ensure board space savings as well.
Data rates greater than 250kbps are ensured at worst
case load conditions. This family is fully compatible
with 3.3V only systems, mixed 3.3V and 5.0V
systems, and 5.0V only systems.
The ICL324x are 3-driver, 5-receiver devices that
provide a complete serial port suitable for laptop or
notebook computers. Both devices also include
noninverting always-active receivers for “wake-up”
capability.
The ICL3221, ICL3223 and ICL3243 feature an
automatic powerdown function that powers down the
on-chip power-supply and driver circuits. Power-down
occurs when an attached peripheral device is shut off
or the RS-232 cable is removed, conserving system
power automatically without changes to the hardware
or operating system. These devices power up again
when a valid RS-232 voltage is applied to any
receiver input.
Table 1 on page 6
summarizes the features of the
devices represented by this datasheet, while
Application Note
AN9863
summarizes the features of
each device comprising the ICL32xx 3V family.
Features
• RoHS Compliant
• 15kV ESD protected (Human Body Model)
• Drop-in replacements for MAX3221, MAX3222,
MAX3223, MAX3232, MAX3241, MAX3243,
SP3243
• ICL3221 is a low-power, pin compatible upgrade for
5V MAX221
• ICL3222 is a low-power, pin compatible upgrade for
5V MAX242, and SP312A
• ICL3232 is a low-power upgrade for HIN232/ICL232
and pin compatible competitor devices
• RS-232 compatible with V
CC
= 2.7V
• Meets EIA/TIA-232 and V.28/V.24 specifications at
3V
• Latch-up free
• On-chip voltage converters require only four
external 0.1µF capacitors
• Manual and automatic powerdown features (except
ICL3232)
• Assured mouse driveability (ICL324x only)
• Receiver hysteresis for improved noise immunity
• Assured minimum data rate: 250kbps
• Assured minimum slew rate: 6V/μs
• Wide power supply range: single +3V to +5.5V
• Low supply current in powerdown state:1µA
Applications
• Any system requiring RS-232 communication ports
○ Battery powered, hand-held, and portable
equipment
○ Laptop computers, Notebooks
○ Modems, printers, and other peripherals
○ Digital cameras
○ Cellular/mobile phones
Related Literature
For a full list of related documents, visit our website:
•
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241,
and
ICL3243
device pages
FN4805 Rev.23.00
Apr.26.19
Page 1 of 36
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Contents
1.
1.1
1.2
1.3
1.4
2.
2.1
2.2
2.3
2.4
3.
4.
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Typical Operating Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4
6
8
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermal Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Typical Performance Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1
4.1.1
4.2
4.3
4.4
4.5
4.5.1
4.5.2
4.5.3
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
Charge Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charge Pump Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Power Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powerdown Functionality (Except ICL3232) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Controlled (Manual) Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INVALID Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Powerdown (ICL3221/23/43 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver ENABLE Control (ICL3221/22/23/41 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Decoupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation Down to 2.7V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Outputs when Exiting Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mouse Driveability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Data Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interconnection with 3V and 5V Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Compatible Replacements For 5V Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
13
14
14
15
15
15
16
18
19
19
19
19
20
20
20
21
22
5.
6.
7.
Die Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Package Outline Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
FN4805 Rev.23.00
Apr.26.19
Page 2 of 36
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
1. Overview
1.
1.1
Overview
Typical Operating Circuits
ICL3221
C
3
(Optional Connection, Note)
+3.3V
+
+
+3.3V
0.1µF
15
V
CC
V+
3
+ C
3
0.1µF
C
4
+ 0.1µF
T1
OUT
RS-232
Levels
TTL/CMOS
Logic Levels
R1
IN
C
1
0.1µF
C
2
0.1µF
+
0.1µF
+
2
4
5
+
6
12
11
C1+
C1-
C2+
C2-
T
1
T
2
V-
15
8
ICL3222
C
3
(Optional Connection, Note)
+
17
V
CC
3
V+
7
+
+ C
3
0.1µF
C
4
0.1µF
T1
OUT
T2
OUT
RS-232
Levels
RS-232
Levels
14
R
1
R2
OUT
10
1 EN
R
2
5kΩ
18
5kΩ
9
R2
IN
R1
IN
GND
16
SHDN
V
CC
C
1
0.1µF
C
2
0.1µF
TTL/CMOS
Logic Levels
2
+ C1+
4
C1-
5
+ C2+
6
C2-
11
V- 7
T
1
13
T1
IN
R1
OUT
T1
IN
T2
IN
9
R
1
1 EN
FORCEOFF
12
FORCEON
GND
14
INVALID
5kΩ
8
16
10
R1
OUT
13
V
CC
To Power
Control
Logic
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
ICL3223
+3.3V
+
0.1µF
2
+
4
5
+
6
13
12
C1+
C1-
C2+
C2-
T
1
T
2
19
V
CC
V+
3
+ C
3
0.1µF
C
4
0.1µF
+
T1
OUT
T1
IN
T2
OUT
RS-232
Levels
TTL/CMOS
Logic Levels
T2
IN
+3.3V
ICL3232
C
3
(Optional Connection, Note)
+
16
V
CC
V+
2
+ C
3
0.1µF
C
4
0.1µF
+
T1
OUT
T2
OUT
13
R
1
R2
OUT
V
CC
To Power
Control Logic
9
R
2
GND
15
5kΩ
5kΩ
8
R2
IN
V-
T
1
T
2
6
14
7
R1
IN
+
0.1μF
1
+
+
3
4
5
11
10
C1+
C1-
C2+
C2-
C
1
0.1µF
C
2
0.1µF
V- 7
17
8
C
1
0.1µF
C
2
0.1µF
T1
IN
TTL/CMOS
Logic Levels
T2
IN
R1
OUT
15
R
1
5kΩ
16
R1
IN
R2
OUT
10
1
EN
R
2
5kΩ
9
R1
OUT
12
R2
IN
FORCEOFF
14
FORCEON
GND
18
INVALID
20
11
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
FN4805 Rev.23.00
Apr.26.19
Page 3 of 36
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
ICL3241
+3.3V
+3.3V
+
0.1µF
26
V
CC
V+
27
+ C
3
0.1µF
C
4
0.1µF
+
T1
OUT
RS-232
Levels
T2
OUT
T3
OUT
21
20
TTL/CMOS
Logic Levels
19
R
1
R2
OUT
18
R
2
17
R3
OUT
R
3
16
R4
OUT
R
4
15
R5
OUT
23
22
EN
R
5
5kΩ
5kΩ
8
R5
IN
R5
OUT
5kΩ
7
R4
IN
15
23
R
5
FORCEON
5kΩ
5kΩ
RS-232
Levels
6
R3
IN
17
R3
OUT
R
3
R4
OUT
16
R
4
5kΩ
8
5kΩ
7
5kΩ
5
R2
IN
4
R2
OUTB
19
R1
IN
R1
OUT
R
1
18
R
2
5kΩ
5kΩ
5
4
+
1. Overview
ICL3243
0.1µF
28
C1+
C1-
C2+
C2-
26
V
CC
27
V+
3
+
C
3
0.1µF
C
1
0.1µF
C
2
0.1µF
28
C1+
+
24
C1-
1
C2+
+
2
C2-
14
13
12
C
1
0.1µF
C
2
0.1µF
+
24
1
2
14
V-
T
1
T
2
T
3
3
9
10
11
+
V-
T
1
C
4
0.1µF
+
T1
OUT
9
T1
IN
T2
IN
T3
IN
R1
OUTB
TTL/CMOS
Logic Levels
R2
OUTB
R1
OUT
T1
IN
13
12
T3
IN
20
T
2
10
11
T2
IN
T2
OUT
T3
OUT
T
3
R1
IN
R2
OUT
R2
IN
R3
IN
R4
IN
R5
IN
To Power
Control Logic
V
CC
22
21
FORCEOFF
INVALID
GND
25
V
CC
SHDN
GND
25
1.2
Ordering Information
Part Number
(Notes
2, 3)
Part Marking
ICL3221CAZ
ICL3221CAZ
3221CVZ
3221CVZ
ICL3221IAZ
ICL3221IAZ
ICL3221IAZ
ICL3222CAZ
Temp. Range (°c)
0 to 70
0 to 70
0 to 70
0 to 70
-40 to 85
-40 to 85
-40 to 85
0 to 70
Tape and Reel
(Units) (Note
1)
-
1k
-
2.5k
-
1k
250
-
Package
(RoHS Compliant)
16 Ld SSOP
16 Ld SSOP
16 Ld TSSOP
16 Ld TSSOP
16 Ld SSOP
16 Ld SSOP
16 Ld SSOP
20 Ld SSOP
Pkg. Dwg. #
M16.209
M16.209
M16.173
M16.173
M16.209
M16.209
M16.209
M20.209
ICL3221CAZ
ICL3221CAZ-T
ICL3221CVZ
ICL3221CVZ-T
ICL3221IAZ
ICL3221IAZ-T
ICL3221IAZ-T7A
ICL3222CAZ
(No longer available,
recommended replacement:
ICL3222ECAZ)
FN4805 Rev.23.00
Apr.26.19
Page 4 of 36
RS-232
Levels
6
RS-232
Levels
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Tape and Reel
(Units) (Note
1)
-
Package
(RoHS Compliant)
18 Ld SOIC
1. Overview
Part Number
(Notes
2, 3)
ICL3222CBZ
(No longer available,
recommended replacement:
ICL3222EIBZ)
ICL3222CVZ
ICL3222CVZ-T
ICL3222IAZ
(No longer available,
recommended replacement:
ICL3222EIAZ)
ICL3222IVZ
(No longer available,
recommended replacement:
ICL3222EIVZ)
ICL3223CAZ
(No longer available,
recommended replacement:
ICL3223ECAZ)
ICL3223IAZ
ICL3223IAZ-T
ICL3223IVZ
ICL3223IVZ-T
ICL3232CAZ
(No longer available,
recommended replacement:
ICL3232ECAZ)
ICL3232CBZ
(No longer available,
recommended replacement:
ICL3232ECBZ)
ICL3232CBNZ
ICL3232CBNZ-T
ICL3232CPZ
ICL3232CVZ
ICL3232CVZ-T
ICL3232IAZ
(No longer available,
recommended replacement:
ICL3232EIAZ)
ICL3232IBZ
(No longer available,
recommended replacement:
ICL3232EIBZ)
ICL3232IBNZ
ICL3232IBNZ-T
ICL3232IBNZ-T7A
ICL3232IVZ
ICL3232IVZ-T
ICL3232IVZ-T7A
ICL3241CAZ
(No longer available,
recommended replacement:
ICL3241ECAZ)
ICL3241CVZ
(No longer available,
recommended replacement:
ICL3241ECVZ)
ICL3241IAZ
(No longer available,
recommended replacement:
ICL3241EIAZ)
Part Marking
3222CBZ
Temp. Range (°c)
0 to 70
Pkg. Dwg. #
M18.3
ICL3222CVZ
ICL3222CVZ
ICL3222IAZ
0 to 70
0 to 70
-40 to 85
-
2.5k
-
20 Ld TSSOP
20 Ld TSSOP
20 Ld SSOP
M20.173
M20.173
M20.209
ICL3222IVZ
-40 to 85
-
20 Ld TSSOP
M20.173
ICL3223CAZ
0 to 70
-
20 Ld SSOP
M20.209
ICL3223IAZ
ICL3223IAZ
ICL3223IVZ
ICL3223IVZ
3232CAZ
-40 to 85
-40 to 85
-40 to 85
-40 to 85
0 to 70
-
1k
-
2.5k
-
20 Ld SSOP
20 Ld SSOP
20 Ld TSSOP
20 Ld TSSOP
16 Ld SSOP
M20.209
M20.209
M20.173
M20.173
M16.209
3232CBZ
0 to 70
-
16 Ld SOIC
M16.3
3232CBNZ
3232CBNZ
ICL3232CPZ
3232CVZ
3232CVZ
3232IAZ
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
-40 to 85
-
2.5k
-
-
2.5k
-
16 Ld SOIC (N)
16 Ld SOIC (N)
16 Ld PDIP
16 Ld TSSOP
16 Ld TSSOP
16 Ld SSOP
M16.15
M16.15
E16.3
M16.173
M16.173
M16.209
3232IBZ
-40 to 85
-
16 Ld SOIC
M16.3
3232IBNZ
3232IBNZ
3232IBNZ
3232IVZ
3232IVZ
3232IVZ
ICL3241CAZ
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
0 to 70
-
2.5k
250
-
2.5k
250
-
16 Ld SOIC (N)
16 Ld SOIC (N)
16 Ld SOIC (N)
16 Ld TSSOP
16 Ld TSSOP
16 Ld TSSOP
28 Ld SSOP
M16.15
M16.15
M16.15
M16.173
M16.173
M16.173
M28.209
ICL3241CVZ
0 to 70
-
28 Ld TSSOP
M28.173
ICL3241IAZ
-40 to 85
-
28 Ld SSOP
M28.209
FN4805 Rev.23.00
Apr.26.19
Page 5 of 36
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